Lesson19: Keshi Pearls
Introduction
Keshi pearls are a unique type of pearl that form as an unexpected result during pearl cultivation. During the pearl farming process, if the nucleus implanted in the oyster is rejected or not properly covered by nacre, the oyster’s mantle continues to secrete nacre. This creates a non-nucleated pearl, known as a Keshi pearl. Keshi pearls are made entirely of nacre and are classified as non-nucleated pearls.
Types
Any cultured pearl type can produce Keshi pearls. Examples include Tahitian Keshi pearls, South Sea Keshi pearls, Akoya Keshi pearls, and freshwater Keshi pearls.
Luster and Texture
Because Keshi pearls are made entirely of nacre, they usually possess a very strong luster and depth. Their surface is fine and smooth to the touch, with an iridescent effect that is often captivating.
Colors
The colors of Keshi pearls are incredibly diverse, influenced by the species of the oyster and the environment. For example, Tahitian Keshi pearls may exhibit silvery-gray, green, or blue hues. South Sea Keshi pearls are often silver-white, while golden South Sea pearls produce golden Keshi pearls. Akoya Keshi pearls are typically white.